target-xtensa: extract core configuration from overlay

Introduce overlay_tool.h that defines core configuration blocks from
data available in the linux architecture variant overlay.

Overlay data is automatically generated in the core configuration
process by Tensilica tools and can be directly converted to qemu xtensa
core description by overlay_tool.h

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/target-xtensa/cpu.h b/target-xtensa/cpu.h
index 9d36c1bad5..0db83a6fd7 100644
--- a/target-xtensa/cpu.h
+++ b/target-xtensa/cpu.h
@@ -285,6 +285,11 @@ typedef struct XtensaConfig {
     xtensa_tlb dtlb;
 } XtensaConfig;
 
+typedef struct XtensaConfigList {
+    const XtensaConfig *config;
+    struct XtensaConfigList *next;
+} XtensaConfigList;
+
 typedef struct CPUXtensaState {
     const XtensaConfig *config;
     uint32_t regs[16];
@@ -317,6 +322,7 @@ typedef struct CPUXtensaState {
 CPUXtensaState *cpu_xtensa_init(const char *cpu_model);
 void xtensa_translate_init(void);
 int cpu_xtensa_exec(CPUXtensaState *s);
+void xtensa_register_core(XtensaConfigList *node);
 void do_interrupt(CPUXtensaState *s);
 void check_interrupts(CPUXtensaState *s);
 void xtensa_irq_init(CPUState *env);